Automatic gasoline-vending machine



W. K. EDWARDS AUTOMATIC GASOLINE VENDING MACHINE Dec. 7 1926.

Filed Oct. 21; 1922 h 6 Sheets-Sheet 1 Dec. 7 1926. 1,609,750

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Filed Oct- 21, 1922 6 Sheets-Sheet Ina enz o 7':

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W. K. EDWARDS AUTOMATIC GASOLINE VENDING MACHINE Dec. 7 1926.

Filed Oct. 21, 1922 6 Sheets-Sheet f4 Dec. 7 1926.

w. K. EDWARDS AUTOMATIC GASOLINE VENDING MACHINE Filed Oct. 21, 1922 6 Sheets-Sheet 5 Inuezzar: ZWzJZ'amJZZ'akaa Dec. 7,1926. 1,609,750

W. K. EDWARDS AUTOMATIC GASOLINE VENDING MACHINE Filed Oct. 21, 1922 6 Sheets-Sheet '6 limk Patented Dec. 7, 1926.

WILLIAMK. EDWARDS, OI BIG SPRING, TEXAS.

AUTOMATIC GASOLINE-VENDING MACHINE.

Application filed October 21,1922. Serial No. 596,021.

This invention relates to liquid vending machines and more particularly to machines for vending liquid hydrocarbon, such as gasoline. Many features of the invention are of general application and may be used for vending liquids generally.

In the illustrated machine a predeter-' mined quantity of gasoline or other liquid hydrocarbon is caused to be pumped into a tank or receptacle of the type usually employed at filling stations for motor'vehicles, upon the insertion of a coin of suitable value. Upon the insertion of a coin of a different value, aiarger or smaller quantity of gasoline is supplied to the receptacle. The machine is, furthermore, capable of such adjustment that the gasoline supplied may be controlled in accordance with the changes in the price of gasoline per gallon.

An important feature of the invention is comprised in an automatic machine of the type referred to wherein the amount of gasoline supplied to the receptacle for use by the purchaser is variable at the will of "the vender, and .such amount is automatically discharged to the receptacle upon the mere actv of inserting a coin in the machine. Another important feature of the invention consists of means, whereby upon the insertion of a coin an electric circuit is closed to energize a motor for actuating a pump to supply liquid gasoline to the receptacle, and at the same time a device is set in position which is subsequently actuated by the rise of a float in the gasoline receptacle to interrupt the circuit and causethe pump to cease operating, thereby stopping the supply of gasoline to the receptacle when apredetermined quantity has been discharged therein.

Other features of the invention, including important combinations of parts and details of the construction of the various mechanisms to be hereinafter more fully described,

' will be better understood from the following description in connection with the accompanying drawings, and the novel features thereof will be pointed out in the appended claims,

In the drawings:

Fig. 1 illustrates in vertical section the lower portion of the tower of a gasoline filling apparatus illustrating certain portions of the invention; r

Fig. 1 is a vertical sectlon of the top part of the device showing the gasoline receptacle;

Fig. 2 is a vertical section, at right angles to Fig. '1;

Fig. 2 is a parti al vertical section, at right angles to Fig. 1";

Fig. 3 s a sectional enlarged view of the gasoline receptacle, partly broken away at the central portion;

Fig. 4 is a horizontal section on the line 4.4, Fig. 3;

. Fig. 5 is an elevation showing a part of .the supporting standards andfloat actuated rod;

Fig. 6 is a horizontal section onthe line 6-6. Fig. 5; a

Fig. '1 is a view. partly sectional, illustrating a coin chute and coin actuated mech-' anism;

Fig. 8 is a similar view to Fig. 7, showing the parts in a different position;

Fig. 9 is a'detailed view illustrating the governor, discharge valve; and connections;

Fig. 10 is a sectional plan view of the parts shown inFig. 9;

Fig. 11 is a vertical sectional view of the upper part of the coin chutes;

Fig. 12 is a similar view showing the parts in a different position Fig. 13 is a detailed sectional view of the slug arresting me"hanism-; and- Fig. 14 is a view showing, diagrammatically, electric circuits relative to the motor and the coin mechanism.

All of the parts of the apparatus are enclosed within a casing 1, wh'ch is provided with a suitable ba e. 3, the gasoline receptacle 5 being composed preferably of glass so that the gasoline supplied thereto may be vis ble, which is common in apparatus of this hara'der. The upper portion of the casing 3 as usual is provided with a reduced neck portion 6 of anv suitable configuration, which is surmounted by an ornamental circular frame 7 containing an advertisement or label indicating the name of the companv supplying the gasoline, or the like.

The gasoline is contained in an underground tank located below the apparatus and a pipe 7 constitutes the suction or inlet pipe of a suitable pump 8,.herein illustrated as being of the rotary type. The discharge pipe 9 from said pump leads upwardly through the stack or casing 1 into an annular chamber 10,- below the gasoline receptacle 5, and in open communication with the latter. A partition 12 divides the chamber into upper and lower compartments and extending upwardly from said partition is an overflow pipe 14 whose upper end terminates at a suitable point in the upper part of the receptacle 5. That portion of the chamber 10 below the artitlon 12 receives the overflow gasoline rom the receptacle if the liquid in said receptacle should rise above a point desired, through the failure of the automatic mechanism to stop the pump. A float 16, herein shown as of hollow metal, is provided with a tubular pipe section 18 at its central portion which fits looselyover the overflow pipe 14 and serves to guide the float along said pipe in its movements.

The receptacle 5 is composed of the glass portion whose lower edge fits within a groove in the upper face of a wall 20 on the top of the casing 1, while the top of said receptacle is composed of a plate 21, having a groove in its underface to receive the top edge of the glass wall of the receptacle. Tie bolts 22 extend through suitable apertures in the plate 21. and are in threaded engagement at their lower' ends with the wall 20, the upper ends of said bolts being provided with nuts 23 in threaded engagement with the bolts and serving to clamp the parts of the receptacle firmly to the wall 20 of the casing.

The plate 21 has an opening 25 in its center, and the float is provided with rods 26 which have connection with a bridge piece 28. Extending upwardly from the bottom of the lower compartment of the chamber 10, and centrally within the overflow pipe 14, is a pipe section 29, and a rod or stem having its upper end rigidly connected with the bridge 28 extends centrally of the pipe section 29 and through the bottom of the chamber 10 downwardly a suitable distance into the casing 1. This rod is instrumental in controlling, through the movements of the float, the mechanism for restoring the coin-controlled devices to their original position and in stopping the action of the pump. The instrumentalities whereby these results are secured will be fully described hereinafter. The pump 8 .is designed to be driven for pumping gasolineinto the receptacle 5, by an electric motor 31 and the operation of this motor is caused to take place when a coin of suitable denomination is inserted in the machine. The value of the coin inserted determines the length of time the motor operates to cause the pump to discharge gasoline into the receptacle, the motor and pump being stopped automatically when the float 16 rises a certain distance in the receptacle. The shaft 32 of the pump 8 is provided with 'a sprocket 33 carrying a chain 34 which exten s women to a sprocket 35 of the electric motor31. Integral with the shaft 36 is a flange 37. Sliding upon thev motor shaft, but keyed thereto, is a clutch collar 38, which is operated by eccentrics 40 at the inner ends of arms 39 of a centrifugal governor composed of said arms and the balls 41 carried by the outer ends thereof. The arms 39 are pivoted to a collar 42, which collar and a hollow extension 43 are rigidly secured to the motor shaft. Links 44 connect the arms 39 with a collar 45 which is rigidly secured to a shaft 46, mounted for reciprocating movements and having at its outer end a ball 47 which enters a socket 48. The socket member 48 is carried by the angular ly bent end 49 of a rod 50, the latter being supported by tubular members 51 extending from brackets which are secured to the inner wall of the casing 1. The rod 46 is surrounded by a. spiral spring 53 confined between the collar 45 and the forward extremity of the motor shaft 364 The tendency of this spring is to force the collar 45 and ball 47 with arm 49 outwardly. When rotation is imparted to the governor by the motor shaft, the balls 41 will move outwardly by centrifugal force; The collar 45 will move inwardly and the eccentrics 40 will act upon the clutch collar 38 ressing the sprocket 35 against the flange 3- thereby clutching said sprocket to the shaft of the motor and driving the pump.

The lower compartment of the chamber 10 is provided with an outlet connected with a pipe 55 which conducts the overflow gasoline back to the underground tank from which it was supplied. The upper compartment of the chamber 10 has an outlet opening 56 into a valve chamber 57, and a lateral opening from this chamber is in communication with a pipe 58 which connects with the hose' discharge pipe'for conducting, the gasoline to the storage tank .of the motor vehicle or other point for consumption by the customer. The discharge 56 is provided with a valve seat and a valve 60 for said seat is provided with a stem 61 extending through a suitable stuffing .box in the valve chamber. The extremity of this stem has a pin and slot connection 62 with the lever 63 which is fulcrumed at 63 to a bracket 64, extending from the valve casing.- The other end of the lever 63 is forked as indicated by 65, and said fork embraces a stud 66, carried by an arm 67 which projects angularly from the upper end of the rod 'llU 50. The angular end of the bracket 64 is provided with a recess within which is seated a spring 68 which bears against the outer end of a swinging abutment 70, which is ivoted at 71 to the arm of the lever 63, a siort distance from the fulcrum point 63 The valve 60 not only seats at thedischarge opening 56 when in closed position, but in Further movement of the governor to open the valve the pivot Ill-will pass be-- yond the fulcrum point 63', first compressmg the spring 68, and there permitting the spring to expand and snap ast the fulcrum 63. The valve-will then eheld in openposition, and the same is true-when the lever 63 has been operated to close the valve, as

shown in Fig. 4. 'Ineither open or closed position of the valve the spring 68 will hold it in such position.

In the operation of the parts as thus'far described, assumin thatthrough theclosure of a suitable circuit, including the motor 31 and a source of current, the motor shaft is rotated, causing the governor arms to move outwardly, the collar 45 will be moved toward the motor, and 'efiect through the described connections anoscillation of the lever 63 to close the outlet .valve from the tank.

will cause the eccentrics to. slide the c utch collar along the motor shaft, clutching the sprocket 35 thereto, and thereb causing the supply the receptacle 5 with liquid. The coin-actuated mechanism is contained in a coin box-40, and coins of difl'erent denominations are caused, by mechanism to be described, to efiect the delivery by the pump to the receptacle of a quantity of gasoline proportional in value to the denomination of the coin. The amount of asoline ,s'o delivered by a coin of any given denomination may be varied by a certain adjustment in accord-' ance with changes in the price of gasoline.

An inclined plate 72, which is supported from the casing 1 by a curved portion 73,-

is provided with a plurality of coin slots, one of-which, 74, appears in Fig. 11. These slots are located side by side, and commu nicate with coin chutes 75, 76, the former being of a size to accommodate, for example,

a fifty cent piece, while the latter is of a size to accommodate a silver dollar. These denominations are given by way of example only, as'it is obvious that the coin chutes and slots may be of such size as to accommodate, respectively,'diiferent coins of any desired denominations. -Each coin slot is covered by a hinged door 76, provided with an inwardly extending curved blade 77 which enters the coin slot. Projecting rearwardly from the hinged connection of the door is a pin 78, from which a spring 79 extends to a fixed part of the casing and normally holds the door closed. Inside of the casing a contact carrying lever 79 is pivoted, the outer end of said lever being in position to be engaged by the pin 78 when the door is closed. The inner end of said lever .is provided -76.-.- is open.

arts

with ,a contact 80 from which leads a wire 81, and a leaf spring 82 bears upon the outer end portion of the lever 79, and holds its inner end a ainst the pin 78. A contact 83 is carriedi an arm projecting inside of the casing, an is arranged in OSItlQl'l' to be engaged by the contact 80 w en the door It will thus be seen that closure ofjthe door .will separate the contact points, breakin the electric circuit, while opening of the oor will permit the contact points to complete the circuit.

As s own inFig. 13, the coin chutes 75, 76, are provided with oppositely located openings in their sides which are closed by slightly inclined to hold the doors closed. Located between the doors is an electro-magnet 85, the wires from. the coils of which are connected with the contacts 80, 83. The

hinged doors 75, 76*, the coin chutes being purpose of fraudulently. operating the machine, the opening of the door will complete a circuit through the magnet, and when the slug comes opposite one of the doors 75 or 76, it will be attracted by the magnet, the door opening and permitting the slug to fall into the box 86 without actuating the mechanism'which, causes the pump to operate for supplyinggasoline to the receptacle. The curved blade 77 is of suchsize and shape as to prevent a slug from being inserted in either of the coin slots until the door has been opened sufiiciently far to permit engagement of the electrical contacts. 4

Figs. 7 and 8 illustrate a coinactuateol mechanism which may be employed for initiating the operation of the pump. As

shown, this mechanism may for purposes of 1llustrat1on, be considered as a mechanism which is operated upon the insertion of a fifty cent piece, which is illustrated by dotted lines, 0, as just of a size to pass down the chute. The coin chute 7 5 is provided at asuitable point above the coin mechanism, with a flexible spring 89, one end of which is secured tothe outside of the chute and the other end extends within the chute at an inclination, and is arranged to prevent smaller coins than the desired denomination from operating the coin mechanism, as such small coins'will be directed against the back wall of the chute by the spring, and thus will not trip the coin lever.

The box or casing 90 is provided with a support 91, to which is fulcrumed a bell crank at 92. One arm 93 of this bell crank has pivoted thereto a detent lever 94, one arm of which lever projects through a slot 95 in the coin chute, and has a projection 96, which is adapted to engage the edge of 60 length rectangular in cross section, extend said slot when the bell crank is in the position shown in Fig. 7. At this time, a leaf spring 97 presses the inner end of the detent upwardly to maintain this engagement. Located within the box 90, and above the slot 95 is a member 98, rovided with a shoulder 99, to be engage by the projection 96 of the detent when the parts are in the position shown in Fig. 8. The end portion of the upwardly extending arm 93 of the bell crank is provided with a metallic contact plate 100, which is suitably insulated upon the arm 93, andextending down with in the box 90 are two posts 101, 101, which carry within the box spring ressed slidable pins 103 having at their en s contacts 104, 104 which are arranged opposite the contact 100. The posts 101 have connected thereto wires 105, 105, which are in circuit with the battery 13, and such circuit is closed when the plate 100 is moved by the arm 93 into engagement with the contacts 104. The description of the coin mechanism to be open ated by a fifty cent piece which is supp by the chute 75 will apply to the coin mechanism tobe operated by a dollar or coin of any other denomination different from that inserted in the chute 75, and hence a duplication of such description will be omitted.

Referring to the diagram Fig. 14, it will be seen how the circuit is closed bythe contact plate 100 on the lever arm 93 of the coin actuated mechanism under the control of a fifty eentpiece, as above described. Located in suitable proximity to this coin mechanism is the coin mechanism for one dollar, for example, the contacts 106, 106, which are carried by spring pressed stems '107, sliding through binding posts 108, which are electrically connected through wires 109, 110 with the wires 105. It will thus be understood that when the plate 111 of this mechanism which is carried by the arm of a bell crank, such as 93 in Fig. 7, engages the contacts 106, 106, the circuit will be completed through the battery B and the motor 31, the same as when such circuit is completed by the movement of the plate 100 into engagement with the contacts 104. The two mechanisms are accordingly inde pendent of each other, and the operation of either one of said mechanisms by a coin of the denomination which is appropriate to the size of the coin chute and slot will be effected without operating the other of said mechanisms.

Referring again to Figs. 7 and 8, two rods 112, 113, which are for the most part of their from the bottom of the compartment 10 through the box 90. One of these rods is appurtenant to each of the coinmechanisms in the box 90, and the rod 113 carries at its lower end a stop 114, and slightly above neoaveo the parts are in the position shown in Fig. 8.

Each of the rods 112, 113 is provided with an adjustable stop 120, which is vertically adjustable on the rod by the movement of a sleeve 121, which carriesthe stop. An adjustable set screw 122 is in threaded engagement with the sleeve 121 and serves to clam said sleeve to the rod in any position of a justment thereon.

The upper end of each rod 112, 113, is guided for limited vertical reciprocating movement in a socket 124:, which projects downwardly from the bottom part of the chamber 10. Spiral springs 125 are interposed between the ends of the rods and the bottoms of the sockets and said rods are provided with pins 126 which are guided tor movements in inclined slots 127 in the walls of the sockets. By this construction, when either of the rods is raised the spring 125 will be compressed and the rod will be turned axially, the turning movement amounting to about 45.

The rod 30 which projects downwardly from the float 16 carries near its lower end a cross bar 128, the outer ends of which are perforated and receive and are guided by rods 130, 130 as the cross bar 128 moves vertically following the movements of the float 16. Two projections 132, are carried by the cross bar 128, and, as shown in Fig. 6, either of the adjustable stops 120 may be interposed in the path of one of these projections as the rod 112 or 113, is rotated. It will be understood that when a rod such as 112 is moved downwardly engagement between the pin 126 and slot 127 will turn the rod appropriately for interposing its stop in the path of the projection 132. As the stop is adjusted at the height appropriate for cutting off the pump when a predetermined quantity of gasoline has been pumped into the receptacle, when the float is caused to rise by the inflowing gasoline and reaches the point necessary to stop the pump such action will be automatically accomplished.

Assuming the parts to be in position as shown in Fig. 7, if a coin of the appropriate denomination is inserted in the slot 74 it will pass down the chute 75, engage the detent 94 and move the projection 96 out of engagement with the wall of the slot. As soon as the detent is released the rod 113 will, under the combined action of its weight and of the, spring 125 drop, tilting the bell crank to the left into the position shown in Fig. 8. This will cause. the. plate 100 to thenbe operated to supply gasoline to the receptacle, the float 16 rising in the latter unt' the projection 132 moves against the stop 120 on the rod I13.'.'This rod was rotated as it moved downwardly and its stop was'placed in the path of movement of the projection. Enga ement between said projection and stop Wlll be followed by a slight lifting of the rod 113 until its stop 115 engages the inner end of the detent 94, depressing the outer end of said detent for enabling it to move through the slot 95 whereupon the s ring 97 will snap it in osition to hold t e parts as shown in Fig. Upward movement of the rod 113 alsoeffects chan e in position of the bell crank from that s own in Fig. 8 to that shown in Fig. 7, thereby interrupting the electric circuit and causing the pump to stop. As soon asthe electric motor ceases to operate 86 the spring 53 will expand and through the described connections open the outlet valve 60 from the compartment 10 to permit the gasoline to be discharged into the tank of a motor vehicle, or other point. Movement 0f the balls of the governor inwardly will also permit the clutch collar 38 to move'out ward y on the motor shaft, thus unelutching the sprocket 35 from said shaft, and stopping the operation of the pump. These several operations will occur upon actuation of either of the coin-controlled mechanisms, independently of the other controlled coin mechanisms. In the mechanism for the coin of lower denomination, illustrated in Figs. 7 and 8, it is necessary to provide some means to prevent tripping of the detent after the projection 132 in its upward movement has passed the stop 120 on rod 113, otherwise the electric circuit would remain closed after the switch of the mechanism controlled by a coin of larger denomination, as one dollar, had been cut off. Accord ingly, I provide a bell crank 140 pivoted on the box 90, and having an upwardly extending arm provided with a nib 141, which is adapted to enter a notch 142 in the rod 113, and be held therein by a leaf spring 143, as shown in Fig. 7. This bell crank will accordingly prevent the rod 113 from dropping and thus the circuit cannot. be closed through this coin mechanism until the lower end of the rod 30 has dropped to its lowest position, thereby engaging the horizontal arm of the bell crank 140, and

through this coin mechanism until the float rod 3Q has returned to its lowest position.

As mdicated by the numeral 150, a suitable graduated scale may be positioned in front of the adjustable stops 120, 120' in order that these may be adjusted properly on their rods to predetermine the quantitv, of gasoline supplied to the receptacle, which quantity is varied to correspond. with the changing prices.

'The mechanism for preventing fraudulent operatlon of the mac-lune by the use of slugs or spurious coins, as illustrated in. Figs. 11, 12 and 13 of the drawings, is *not claimed herein, but is shown, described and claimed in my divisional application Serial No. 596,- 022 filed Oct. 21, 1922.

Modifications in the details of the several parts illustrated, and variations in the arrangement of said parts are to be understood to be within the scope of the invention, provided such variations and changes fall within the scope of the following claims.

Having thus described my invention, what I deslre to secure by Letters Patent is:

1. In an apparatus of the class described, the combination with a receptacle,. of an outlet valve controlling the discharge there from, a pump for supplying liquid to the receptacle, a motor for driving said ump, a governor, and connections from sai governor for causing the motor to operate, and a governor, and connections fro 1 n said governoroperated by said motor-to first close said outlet valve and thereafter cause the no motor to drive the pump.

2. In an apparatus of the class described, the combination with a receptacle, of a pump for supplying liquid thereto, a motor for driving said pump, means including coincontrolled devices for initiating the operation of the motor, a governor driven by the motor shaft, an outlet valve from said receptacle, said parts being so organized that the governor through suitable connections first closes the outlet valve, and then operatively connects the motor and pump, and means operated by the rise of liquid in the receptacle to open the outlet valve and cause the motor to cease operating, said means being adjustable to vary the point at which these operations take place.

3. In an apparatus of the class described, the combination with the receptacle, of a pump for supplying liquid thereto, an electric motor for operating said pump, a float in said receptacle. a device extending from said float and provided with a projection, a plurality of coin-controlled devices arranged respectively for operation by coins of different value, means including a source of current and circuit wires for operating said motor, switches operated by the coincontrolled devices for independently closing said circuit, a rod extending upwardly from each coin-controlled device, and provided with an adjustable stop, means for rotating said rods to place elther of said stops in the path of movement of said projection, and connections from the coin-controlled devices to said rods arranged to permit either rod to fall to thereby place its stop in the path of said projection, upon the insertion of a coin.

4.- In an apparatus of the class described, the combination with a receptacle, means for supplying liquid thereto including a pump and an electric motor for driving the same, a source of current and circuit wires including said motor, a float in said receptacle. a rod extending from said float and provided with a projection, a second rod provided with an adjustable stop, means for turning said last named rod to place said stop in the path of said projection, a switch for completing said circuit and coin-controlled means for closing said switch and for permitting the last named rod to drop and thereby effect its partial rotation, the parts being so arranged that movement of the float as the liquid rises in the receptacle will cause the projection to engage the adjustable stop and restore the co1ncontrolled means to its initial position, thereby opening the switch and breaking the circuit to stop the operation of the motor and pump.

5. In an apparatus of the class described, the combination with a receptacle, of a pump for supplying liquid thereto, a motor for said pump, electric means for operating said motor including a switch, a float in said receptacle. a device extending from said float and provided with a projection, a rod provided with an adjustable stop and capable of rotation to move said stop in and out of the path of said projection, and coin-controlled means for operating said switch and permitting said rod to drop to effect its partial rotation, the parts being so arranged that engagement between said projection and stop upon rise of liquid in the receptacle will serve to restore said rod and coin-controlled mechanism to their initial positions, and to open the switch in the circuit of said motor.

6. In an apparatus of the class described, the combination with a receptacle, a float therein, a device extending from said float provided with a projection, a pump for supplying said receptacle with liquid, a motor for driving said pump, a movable rod provided with an adjustable stop, and coincontrolled devices arranged to start the operation of the motor and to permit movement of said rod for causing said stop to be placed in the path of said projection, said parts being restored to initial position when the floatrises in the tank to a predetermined level in accordancewith the adjustment of said stop.

7. In an" apparatus of the class described, the combination with a receptacle for holding liquid h drocarbon, an outlet valve therefor, means including a pump and motor for supplying liquid to the receptacle, means including a float and devices actuated thereby to stop the o eration of the motor when a ,predetermine liquid level is reached in the receptacle, a governor-and connections therefrom to first close said outlet valve and to thereafter operatively connect said motor and pump, and to disconnect the motor and pump and open the outlet valve when the motor stops, and coin-controlled means for initiating the operation of the motor.

- 8:: In an apparatus of the class'described, the combination with a receptacle, of means including a pump and motor for supplying liquid to the receptacle, an outlet valve from said receptacle, a governor o erated by said motor, connections whereby t e .governor effects closure of saidoutlet valve and also effects connection between the motor and pumpto thereafter drive the pum and means controlled by the liquid level 1n the tank to stop the operation of the motor and thereby cause the governor to open the outlet valve and to disconnect the motor from the pump, said means arranged tooperate when the liquid in the receptacle reaches a predetermined level.

9. In an apparatus of the class described,

the combination with a receptacle, of apump, an electric motor for operating said pump, governor-controlled means operated by said motor for closing an outlet from said receptacle and thereafter operatively connecting said motor and pump, means operated by the rise of liquid in the tank to stop said motor and effect through the governor openin of the outlet valve and disconnection 0 the motor from the pump, and coin-controlled devices to initiate the operation of the motor.

10. In an apparatus of the class described, the combination with a receptacle, of means for supplying liquid thereto, including an electric motor and pump, said means being controlled electrically by a switch, an outlet valve from said receptacle, means whereby operation of the motor first effects closure of said valve and then operatively connects the motor and pump, means for closing said switch to initiate the operations of the motor, and means controlled by the level of the liquid in the receptacle to opensaid switch, thereby permitting the motor to stop trolled means for independently closing either of said switches, each of said. means being operable by a coin of different size, devicesincluding a float, operated by the rise of liquid in the receptacle for independently restorin either of saidcoin-controlled means to i'mtial position, said'devices operable upon the rise of the liquid to 'dif ferent levels in the tank, respectively, in accordance with the coin value of the coinc'ontrolled means which is operated, and a device to prevent the operation of the coincontrolled means actuated by a coin of lower value until the float has reached its lowest level inv the receptacle.

In testimony whereof I have hereunto set my hand this 14th day of October A. D. 1922.

WILLIAM K. EDWARDS. 

